Runtime connection lost with Modbus TCP/IP driver

[RR_10763281]

Hi everyone,

I’m encountering a recurring issue with KEPServerEX v6.16.203.0 using the Modbus TCP/IP Ethernet driver. At random times, the following popup appears:

“Runtime connection lost, reconnect?”

This causes temporary communication drops with Modbus devices on the network.

System details:

KEPServerEX version: 6.16.203.0

Driver: Modbus TCP/IP Ethernet

Network: Local Ethernet, no packet loss or network faults observed

Has anyone experienced this kind of issue?

Could it be related to the Security Policies Plug-in or licensing constraints?

Are there any recommended settings to make the Runtime more stable?

Any help or insight would be appreciated. Thanks!

[rajskumar · Accepted solution]

Hello,

You mentioned that this issue occurs at random times. Have you noticed any pattern, such as it happening only after startup?

I am asking because we have fixed an issue in later versions that could cause a crash during startup. To rule this out, I suggest upgrading to the latest version 6.18 and checking if the issue persists. Thanks